Hi Kas, Ebay bidding can be frustrating. I think the bottom line is to bid the highest you are willing to go and then walk away.
You WILL find one, it's just a matter of time :D
The tan are rare, I doubt you'd get one that isn't pricey, but maybe a white one?
They are all fantastic. I sew on mine every day. My Bernina is getting lonesome :D